/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshBoneWeightFunctions.h
Create a new BoneWeights attribute on the TargetMesh, if it does not already exist. If it does exist, and bReplaceExistingProfile is passed as true, the attribute will be removed and re-added, to reset it.
static MeshCreateBoneWeights()